South Carolina governor endorsed Romney after accepting contributions

'Citizens United' decision attracting legal challenges, protests

Average super PAC donor gave $33,500 to outside spending groups, while an individual can only give $2,500

'Liberal media' tag doesn't hold up when it comes to super PACs

Current and former Bain Capital execs and family spend nearly $5 million to help Romney win White House

Conservative lawyers dismiss threat of foreign money, anonymous political spending

At least four Cabinet members may go to bat for Democratic super PACs

Quick stats on the super PAC, supporting Democratic Senate members and candidates

Quick stats on the super PAC, supporting the Democratic party

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